Weber dcnf 42, Are they to big for 1.8? Options

[914fun]

Will weber dcnf 42 be to big for a stock 1.8 lt? Im taking off the D-jet system. Ben fooling with it for almost 3 years now. Done spending time and money on that system. So its time to spend time and money on a carb system. I plan on using my dizy for now. Im thinking the 34 would be to small. From what I read the 40 work well but I found some 42 that are at a good price. What do you guys think?

[914fun]

I seen those carbs on Thesamba. I guess I dont really know what I'm looking for when it comes to carbs. Whats wrong with the D-jet is to rev it by hand it sound ok but when I drive it it misses really bad. I look at the plugs and they are black with carbon. Running rich. I think I have done everything everyone has suggested. I just want to drive the thing. Seems like over the 3 years I've had it I get it running somewhat for a day or two and then I cant drive it for months because something crazy with the fuel delivery happens. Every time I mess with one thing two more things go wrong. I had carbs on my first 914 20 years ago and at least if it had a problem mechanics could figure it out without replacing everything twice to see if that will fix it. I dont have people in this aria that know anything about this system. So even though I would like for the D-jet to work I feel its best to go with carbs so I can have a better chance at keeping it usable. Thanks guys.